EVP_CIPHER_iv_length
int ivlen = EVP_CIPHER_iv_length(enc_config.cipher);
EVP_CIPHER_iv_length(enc_config.cipher) != 0) {
iv_len = EVP_CIPHER_iv_length(enc_config.cipher);
if (EVP_CIPHER_iv_length(cipher)) {
memcpy(iv, aiv, EVP_CIPHER_iv_length(cipher));
arc4random_buf(iv, EVP_CIPHER_iv_length(cipher));
if ((size_t)EVP_CIPHER_iv_length(cipher) > 16) {
memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)),
EVP_CIPHER_iv_length(cipher));
iter, EVP_CIPHER_iv_length(cipher), iv, md)) {
ivlen = EVP_CIPHER_iv_length(evp_cipher);
int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher);
EVP_CIPHER_iv_length(EVP_aes_128_cbc())))
iv_len = EVP_CIPHER_iv_length(cipher);
if (EVP_CIPHER_iv_length(rl->cipher) != CBS_len(iv))